Why did mikhail gorbachev win the otto hahn peace medal in gold prize?

Mikhail Gorbachev was awarded the Otto Hahn Peace Medal in Gold for his significant contributions to international peace and disarmament during his tenure as the General Secretary of the Communist Party of the Soviet Union. His policies of glasnost (openness) and perestroika (restructuring) facilitated greater transparency and dialogue, ultimately leading to the end of the Cold War. Gorbachev's efforts in reducing nuclear arms and promoting cooperation between East and West were pivotal in fostering a more peaceful global environment.